From: Baptiste Clenet <bapclenet@gmail.com>
To: Alexander Aring <alex.aring@gmail.com>
Cc: linux-wpan@vger.kernel.org
Subject: Re: ping6 -> lowpan0 -> wpan0. Ping6 doesn't succeed to send messages
Date: Tue, 21 Jul 2015 08:52:58 +0200 [thread overview]
Message-ID: <CAPpUg6NrQZ76Sgy8_HqpGE8sxVy=zwhqL4HyB-WaKU9f6B9uOQ@mail.gmail.com> (raw)
In-Reply-To: <20150715174830.GA2288@omega>
Le 15 juil. 2015 19:48, "Alexander Aring" <alex.aring@gmail.com> a écrit :
>
> On Wed, Jul 15, 2015 at 04:34:09PM +0200, Baptiste Clenet wrote:
> > 2015-07-15 9:13 GMT+02:00 Alexander Aring <alex.aring@gmail.com>:
> > > Hi,
> > >
> > > adding missed cc.
> > >
> > > On Wed, Jul 15, 2015 at 09:12:14AM +0200, Alexander Aring wrote:
> > >> On Tue, Jul 14, 2015 at 11:22:32PM +0200, Baptiste Clenet wrote:
> > >> ...
> > >> >
> > >> > Kind of a backtrace (printk at each beginning of a function)
> > >> > root@OpenWrt:/# ip link set lowpan0 up
> > >> > [ 214.708111] lowpan_header_create
> > >> > [ 214.714520] lowpan_xmit
> > >> > [ 214.719378] lowpan_header
> > >> > [ 214.724569] tx.c dev_queue_xmit
> > >> > [ 214.730795] at86rf230_xmit_start
> > >> > [ 214.737669] at86rf230_write_frame
> > >> > [ 214.745539] at86rf230_write_frame_complete
> > >> > [ 214.828082] lowpan_header_create
> > >> > [ 214.834484] lowpan_xmit
> > >> > [ 214.839334] lowpan_header
> > >> > [ 214.844523] tx.c dev_queue_xmit
> > >> > [ 215.368119] lowpan_header_create
> > >> > [ 215.374529] lowpan_xmit
> > >> > [ 215.379398] lowpan_header
> > >> > [ 215.384589] tx.c dev_queue_xmit
> > >> > [ 216.368196] lowpan_header_create
> > >> > [ 216.374604] lowpan_xmit
> > >> > [ 216.379468] lowpan_header
> > >> > [ 216.384658] tx.c dev_queue_xmit
> > >> > [ 216.390934] lowpan_header_create
> > >> > [ 216.397319] lowpan_xmit
> > >> > [ 216.402168] lowpan_header
> > >> > [ 216.407351] tx.c dev_queue_xmit
> > >> > [ 216.898090] lowpan_header_create
> > >> >
> > >> > [ 216.904496] lowpan_xmit
> > >> >
> > >> > [ 216.909350] lowpan_header
> > >> > [ 216.914539] tx.c dev_queue_xmit
> > >> > [ 216.978063] lowpan_header_create
> > >> > [ 216.984464] lowpan_xmit
> > >> > [ 216.989312] lowpan_header
> > >> > [ 216.994498] tx.c dev_queue_xmit
> > >> >
> > >> > You see that at86rf230_xmit_start is called only once so I seems
> > >> > logical that while doing a ping6, it's not called as well.
> > >>
> > >> I maybe know what happens here.
> > >>
> > >> You transmit only one frame at beginning, this occurs that the netdev
> > >> queue will be stopped -> The driver layer doesn't get new "send a frame",
> > >> the xmit callback.
> > >>
> > >> This happens once, then the queue is stopped on the "tx completion
> > >> interrupt" we awake the queue again. -> The driver layer can send a
> > >> frame again.
> > >>
> > >> It seems for me that you don't get any irq, instrument please the function:
> > >>
> > >> at86rf230_isr
> > No call for isr but most of all, no irq on the irq line. polarity set
> > to 0 (reg 0x04), TRX enable (reg 0x0E)
> > This is definitely the problem
> >
>
> "no irq on the irq line" -> this means you check the irq line on the
> at86rf212 and it's not high?
Yes indeed, I solved that first problem.
If not can you please check that with some
> multimeter.
>
> > >>
> > >> and check
> > >>
> > >> cat /proc/interrupts
> > Yes the spi int is defined
> > 23: 0 INTC 15 spi32765.0
> > Why 23 on the left and 15 ont the right?
> >
>
> 23 is definitely the irqnum, the 15 is some system internal number of
> your arm soc. Maybe 15 is GPIO15, does this makes any sense? :-)
Yes it makes sense, I'm looking at how are defined the irq in my dts.
Which file should take of setting the irq ? Gpio driver of each board
? Or is there another driver for irq ? Because in gpio-mt7621, I
can't see any write in the registers for handling IRQ...
>
> I have there (beaglebone):
>
> 141: 77445 481ae000.gpio 19 Level spi1.0
>
> (RPi):
>
> 111: 129 pinctrl-bcm2835 23 Level spi32766.0
>
> When the above test results into "the irq line is high and the system
> doesn't do anything at the at86rf230_isr function" then something is
> wrong with your interrupt setup in your device tree file and I can't
> help you there.
Yep I know :-\
I'm going to look a bit more a those drivers and see how they set IRQs
>
> - Alex
prev parent reply other threads:[~2015-07-21 6:52 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-13 14:59 ping6 -> lowpan0 -> wpan0. Ping6 doesn't succeed to send messages Baptiste Clenet
2015-07-13 16:18 ` Baptiste Clenet
2015-07-13 17:48 ` Alexander Aring
2015-07-14 10:56 ` Baptiste Clenet
2015-07-14 17:45 ` Baptiste Clenet
2015-07-14 18:11 ` Alexander Aring
2015-07-14 21:18 ` Baptiste Clenet
2015-07-14 21:50 ` Baptiste Clenet
[not found] ` <CAPpUg6Odxw1F6+3frQibxtORaUic0M1F_9rGdY6RWZK1uaM17Q@mail.gmail.com>
[not found] ` <20150715071214.GA5680@omega>
2015-07-15 7:13 ` Alexander Aring
2015-07-15 14:34 ` Baptiste Clenet
2015-07-15 14:37 ` Baptiste Clenet
2015-07-15 17:48 ` Alexander Aring
2015-07-21 6:52 ` Baptiste Clenet [this message]
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